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cover of episode How the mantis shrimp builds its powerful club, and mysteries of middle Earth

How the mantis shrimp builds its powerful club, and mysteries of middle Earth

2025/2/6
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Science Magazine Podcast

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Nicholas Alderate
P
Paul Voosen
S
Sarah Crespi
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Paul Voosen: 地幔占据地球体积的五分之四,是板块构造运动的驱动力。大陆板块在地幔上漂浮,并在俯冲带下沉,随后又上升形成新的板块。地幔柱从地幔深处上升,穿透地壳,形成如夏威夷这样的热点。最新的研究利用地震波技术探测地幔内部结构,发现一些板块和地幔柱在地幔中会遇到阻碍,停留在特定深度。在660公里和1000公里深度附近存在明显的物质相变界面,这些界面的性质和成因是当前研究的热点。通过模拟地幔内部的高温高压环境,科学家们正在研究这些相变对板块运动的影响,以及它们如何解释板块俯冲过程中遇到的阻碍。 Sarah Crespi: 地幔是地球内部的重要组成部分,了解地幔的结构和动态对于理解地球的演化至关重要。过去的研究主要集中在地幔柱等现象上,但最新的研究表明,地幔内部的结构远比我们想象的复杂。通过地震波分析和高温高压实验,科学家们正在逐步揭示地幔内部的秘密,这些研究将有助于我们更好地理解地球的过去、现在和未来。

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First up this week, Staff Writer Paul Voosen joins host Sarah Crespi to discuss mapping clogs and flows) in Earth’s middle layer—the mantle. They also talk about recent policy stories on NASA’s) reactions to President Donald Trump’s administration’s executive orders.

 

Next, the mantis shrimp is famous for its powerful club, a biological hammer it uses to crack open hard shells. The club applies immense force on impact, but how does it keep itself together blow after blow? Nicolas Alderete) is an associate researcher at the National Institute of Standards and Technology, but at the time of the work he was a graduate researcher in theoretical and applied mechanics at Northwestern University. He joins the podcast to discuss the makeup of the mantis shrimp’s club and how it uses “phononics”—specialized microstructures that can reduce or change high-frequency vibrations—to reduce wear and tear) when smashing and bashing.

 

This week’s episode was produced with help from Podigy).

 

About the Science Podcast)

 

Authors: Sarah Crespi; Paul Voosen

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